/Engine/Plugins/Enterprise/DataprepEditor/Source/DataprepCore/Public/DataprepActionAsset.h
Insert a copy of each step into the action at the requested index
The index of the added step or index none if the step is invalid
bool InsertSteps ( const [TArray](API\Runtime\Core\Containers\TArray)< const [UDataprepActionStep](API\Plugins\DataprepCore\UDataprepActionStep) * > & ActionSteps, int32 Index )